Initial commit

libs/smart_ptr/test/sp_atomic_test.cpp

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+#include <boost/config.hpp>
+
+//  sp_atomic_test.cpp
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/memory_order.hpp>
+
+//
+
+struct X
+{
+};
+
+#define BOOST_TEST_SP_EQ( p, q ) BOOST_TEST( p == q && !( p < q ) && !( q < p ) )
+
+int main()
+{
+    boost::shared_ptr<X> px( new X );
+
+    {
+        boost::shared_ptr<X> p2 = boost::atomic_load( &px );
+        BOOST_TEST_SP_EQ( p2, px );
+
+        boost::shared_ptr<X> px2( new X );
+        boost::atomic_store( &px, px2 );
+        BOOST_TEST_SP_EQ( px, px2 );
+
+        p2 = boost::atomic_load( &px );
+        BOOST_TEST_SP_EQ( p2, px );
+        BOOST_TEST_SP_EQ( p2, px2 );
+
+        boost::shared_ptr<X> px3( new X );
+        boost::shared_ptr<X> p3 = boost::atomic_exchange( &px, px3 );
+        BOOST_TEST_SP_EQ( p3, px2 );
+        BOOST_TEST_SP_EQ( px, px3 );
+
+        boost::shared_ptr<X> px4( new X );
+        boost::shared_ptr<X> cmp;
+
+        bool r = boost::atomic_compare_exchange( &px, &cmp, px4 );
+        BOOST_TEST( !r );
+        BOOST_TEST_SP_EQ( px, px3 );
+        BOOST_TEST_SP_EQ( cmp, px3 );
+
+        r = boost::atomic_compare_exchange( &px, &cmp, px4 );
+        BOOST_TEST( r );
+        BOOST_TEST_SP_EQ( px, px4 );
+    }
+
+    //
+
+    px.reset();
+
+    {
+        boost::shared_ptr<X> p2 = boost::atomic_load_explicit( &px, boost::memory_order_acquire );
+        BOOST_TEST_SP_EQ( p2, px );
+
+        boost::shared_ptr<X> px2( new X );
+        boost::atomic_store_explicit( &px, px2, boost::memory_order_release );
+        BOOST_TEST_SP_EQ( px, px2 );
+
+        boost::shared_ptr<X> p3 = boost::atomic_exchange_explicit( &px, boost::shared_ptr<X>(), boost::memory_order_acq_rel );
+        BOOST_TEST_SP_EQ( p3, px2 );
+        BOOST_TEST_SP_EQ( px, p2 );
+
+        boost::shared_ptr<X> px4( new X );
+        boost::shared_ptr<X> cmp( px2 );
+
+        bool r = boost::atomic_compare_exchange_explicit( &px, &cmp, px4, boost::memory_order_acquire, boost::memory_order_relaxed );
+        BOOST_TEST( !r );
+        BOOST_TEST_SP_EQ( px, p2 );
+        BOOST_TEST_SP_EQ( cmp, p2 );
+
+        r = boost::atomic_compare_exchange_explicit( &px, &cmp, px4, boost::memory_order_release, boost::memory_order_acquire );
+        BOOST_TEST( r );
+        BOOST_TEST_SP_EQ( px, px4 );
+    }
+
+    return boost::report_errors();
+}